SEAL - 3.125" SHAFT X 4.50" BORE X 0.6"; 12 & 16K UNITIZED OIL National #370014A; CR 31281; TCM OB3145059; DEX 10-56

Wheel End Oil Seal – 12,000–16,000 lb Axles (3.125" ID)

Heavy‑duty sealing performance for commercial‑grade trailer hubs.

This 3.125" ID wheel end oil seal is engineered for 12,000–16,000 lb trailer axles, providing a robust, leak‑resistant barrier that keeps oil in and contaminants out. Built for demanding applications, it protects bearings, reduces maintenance issues, and ensures long‑lasting hub performance. Ideal for oil‑bath hub systems on heavy‑equipment, industrial, and commercial trailers.

 Key Features

• Fits 12K–16K Trailer Axles Designed for large‑capacity hub and drum assemblies.

• 3.125" Inner Diameter Matches common spindle dimensions used on heavy‑duty axles.

• Premium Rubber & Metal Construction Withstands heat, load, and long‑haul operation.

• Oil‑Bath Hub Compatible Maintains proper lubrication while preventing leaks.

• Protects Bearings & Hub Components